i swear!

Yeah, it's set in the categories. Set your store location, then set the tax for the appropriate categories. It'll only do your state unless you check off the "force tax" checkbox, in which case it'll force taxes regardless of location.

Also worth noting is that the tax is calculated based on the shipping address and not the billing address.

Does that help?

(We know we need more flexible tax systems, particularly for Canada, which is just insane. That's coming at some point, but for now it works for most non-Canadian countries